there, the southwest desert contains a remarkable variety of plants.A. Rarely as it rains

there, the southwest desert contains a remarkable variety of plants.
A. Rarely as it rains
B. Sometimes it rains
C. It rarely rains
D. Although rarely rains

(答案→)A. Rarely as it rainsB. Sometimes it rainsC. It rarely rainsD. Although rarely rains解析：as“虽然”连接状语从句倒装。 虽然很少下雨但是西南沙漠地区却有许多奇异的植物。

这个问题的回答的对